The GraviTrax Tower Track snaps inside the open tunnel of GraviTrax stacker towers, and enables attaching rails to either end. It's also perfect for making a U-turn using a Vertical U-Turn or Flextube from a tile sitting on a clear layer platform on top of the tower.

Version 1.6a can be used in only the top 3 out of 4 positions, but requires no supports to print.

Version 1.6b fits in all 4 positions inside a GraviTrax PRO open stacker tower, but needs to be printed with supports.

To use the Tower Track, insert into the open stacker tower at an angle (tilted on the roll axis) and twist to click in place. Two tower tracks can be used simultaneously inside a single tower.

Here's a video that uses Tower Tracks printed by Coogelbahn.de:
https://youtu.be/HLu-_pys3dg

Here's a short video that shows additional applications of Tower Tracks:
https://youtube.com/shorts/46dHnn2VZwg?feature=share

These objects were made in Tinkercad. Edit them online:
Version 1.6a: https://www.tinkercad.com/things/dUXq9gFKwEg
Version 1.6b: https://www.tinkercad.com/things/0KOQ5GzFV2S

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